I used to be able to get up to at least 48 miles, but after September I can't break 38 no matter how hard I try. Q: After driving 5,500 miles in Volt now, I am noticing a huge drop-off in EV range starting in September. I say go for it as long as you're OK with the temperature in the car. Larry Laws: Yes, not using climate control will help maximize your EV range. Q: Most of my driving is short distances and I haven't been using any climate controls hoping that I will conserve battery charge. Larry Laws: The Volt will retain and cold the same as any other new car. I suspect pre-heating the Volt while plugged in will only feel good for a few minutes. Q: Is the Volt better insulated against cabin temperature loss? When I turn the heater off in my regular car, I can feel the temp dropping immediately. Larry Laws: Yes, some energy will come from the battery, especially if it is very cold outside. Q: Does preheating the car off of 110 power deplete the battery at all? Plugging in or not plugging in doesn't change the behavior of the car in terms of the temperature in which the engine will come on. Larry Laws: Yes, the engine can still turn on when the car is plugged in when it is extremely cold out to provide cabin heating.
Q: When one remotely starts the vehicle and it is plugged in, is it possible that the gas engine may turn on while the car heats up or does that only happen when the car is not plugged in? Larry Laws: The 240-volt charger has more power and can preheat the cabin a little bit better, but the engine cycling is based on ambient temperature and coolant temperature and neither (240-volts or 120 volts) will prevent the engine from coming on when it is extremely cold.
I've read that warming off the 110 charger will still result in the ICE coming on at times of battery depletion or extreme cold. Because I mostly charge overnight I haven't opted for the 220v charger and use the 110 version that came with the vehicle. Q: I use the OnStar warm-up function when my car is in the garage and plugged in on cold days. Below that, we recommend you keep the car plugged in. Larry Laws: The battery is designed to start the car at temperatures as low as -30 degrees Celsius. Will the battery be warm enough to start the car? I am wondering what will happen when we have a REALLY cold day, perhaps it never gets above 0 degrees, when my Volt is parked outside for maybe 8-10 hours. It's starting to get quite cold here in Minnesota (0 degrees this morning). Mountain mode is used for high-load conditions. It's more efficient (and better for the environment) to charge the battery off the wall. Larry Laws: In the energy equation, it's not better to charge the battery from the engine.
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Q: Is there any overall energy advantage to running in Mountain Mode once the generator starts to charge the batteries so that you can run additional time later off the batteries? I noticed that the generator is really working in Mountain Mode and would assume it is using more gasoline during that time. Larry Laws: It's actually the Volt tires that give the car good snow performance.
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